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1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 #include "vm/code_patcher.h" | 5 #include "vm/code_patcher.h" |
6 #include "vm/cpu.h" | 6 #include "vm/cpu.h" |
7 #include "vm/instructions.h" | 7 #include "vm/instructions.h" |
8 #include "vm/object.h" | 8 #include "vm/object.h" |
9 #include "vm/virtual_memory.h" | 9 #include "vm/virtual_memory.h" |
10 | 10 |
11 namespace dart { | 11 namespace dart { |
12 | 12 |
13 DEFINE_FLAG(bool, write_protect_code, true, "Write protect jitted code"); | 13 DEFINE_FLAG(bool, write_protect_code, true, "Write protect jitted code"); |
14 | 14 |
15 | 15 |
16 WritableInstructionsScope::WritableInstructionsScope(uword address, | 16 WritableInstructionsScope::WritableInstructionsScope(uword address, |
17 intptr_t size) | 17 intptr_t size) |
18 : address_(address), size_(size) { | 18 : address_(address), size_(size) { |
19 if (FLAG_write_protect_code) { | 19 if (FLAG_write_protect_code) { |
20 bool status = VirtualMemory::Protect(reinterpret_cast<void*>(address), | 20 bool status = VirtualMemory::Protect(reinterpret_cast<void*>(address), size, |
21 size, | |
22 VirtualMemory::kReadWrite); | 21 VirtualMemory::kReadWrite); |
23 ASSERT(status); | 22 ASSERT(status); |
24 } | 23 } |
25 } | 24 } |
26 | 25 |
27 | 26 |
28 WritableInstructionsScope::~WritableInstructionsScope() { | 27 WritableInstructionsScope::~WritableInstructionsScope() { |
29 if (FLAG_write_protect_code) { | 28 if (FLAG_write_protect_code) { |
30 bool status = VirtualMemory::Protect(reinterpret_cast<void*>(address_), | 29 bool status = VirtualMemory::Protect(reinterpret_cast<void*>(address_), |
31 size_, | 30 size_, VirtualMemory::kReadExecute); |
32 VirtualMemory::kReadExecute); | |
33 ASSERT(status); | 31 ASSERT(status); |
34 } | 32 } |
35 } | 33 } |
36 | 34 |
37 } // namespace dart | 35 } // namespace dart |
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